Observation and Dynamical Analysis of Jiulongjiang River Diluted Water Discharging into the West Taiwan Strait

本文以实测CTD数据、卫星遥感浊度资料为基础，分析了九龙江冲淡水在台湾海峡西部的水文特征和扩展模式；在径流量和遥感风场数据的基础上，探讨了九龙江冲淡水扩展方式的主要影响因素，并结合流体力学的知识和热力学统计模型对九龙江冲淡水的动力特征进行了研究；同时，本文还利用ROMS模式模拟了不同背景沿岸流下，理想化九龙江冲淡水的扩展情况，进一步了解理想化九龙江冲淡水对沿岸流的响应过程和动力机制。 通过对2009-2012年6-7月厦门湾口附近海域CTD资料的分析表明，2009年、2010年和2012年夏季九龙江冲淡水以射流的形式经厦门湾进入台湾海峡西部；进入台湾海峡后，九龙江冲淡水在扩展的过程中可能会发...On the basis of the in-situ CTD data and the satellite remote-sensing turbidity data, the hydrological characteristics and the expanding patterns of the Jiulongjiang River diluted water (JDW) have been studied. The paper has also analyzed the influencing factors. Then the knowledge of fluid dynamics and a terrestrial dissolved organic matter (DOM) distribution model have been applied to reveal the...学位：理学博士院系专业：海洋与环境学院_物理海洋学学号：2242009015326

Application of Data Assimilation Method in Tide Simulation and Prediction in the Taiwan Strait

本论文建立了一个台湾海峡潮汐数值模型，研究的重点是将数据同化技术用于该潮汐数值模型中，以进一步提高该模型模拟和预报的准确度。这里分别采用了两种同化方法：（1）集合Kalman滤波同化方法；（2）直接同化方法。 考虑就单站点来说，潮汐数值预报的准确度一般明显低于基于长期潮汐观测数据调和分析所得的潮汐的预报准确度。而且调和分析所得到的潮汐数据相对各种实测水位数据来说，由于不包含天气和海浪等因素的影响因而更能反映实际天文潮的变化情况。因此，本论文参与同化和验证同化效果的数据均采用潮汐表公布的数据。 在集合Kalman滤波同化方法中，本论文同化了东山站、厦门站、娘宫站、崇武站及三沙站的“潮汐表”上...A normal tide numerical model is established for the Taiwan Strait and its surrounding sea areas. In order to improve the accuracy of the model’s numerical simulation, an Ensemble Kalman Filter (EnKF) data assimilation technique is considered in the model, and this model is called ‘A tide numerical model with EnKF’. Another tide numerical model which is straightly assimilating data from 2009 Tide ...学位：理学硕士院系专业：海洋与环境学院环境科学与工程系_环境管理学号：2262006115240

The impact of sea-level rise superimposed storm surges on China's ocean economy in 2050

本研究基于ArcGIS的淹没模型与夜光遥感的GDP空间化处理结果,同时结合对2050年中国海洋经济增长预测,评估海平面上升叠加风暴潮三种情景对中; 国沿海各省市海洋经济的影响效应。模拟结果表明:海平面上升叠加风暴潮与天文潮的CHmax-0.3; m情景下全国海洋经济损失最大,2050年损失达到35444.59亿元,占海洋生产总值的9.39%;从2050年各省海洋经济损失比例来看(CHma; x-0.3 m情景),辽宁省损失比例最大,其次为广东省,福建省和广西省;从各省海洋经济损失的绝对值来看,在海平面上升0.3; m的三种情景下,广东、辽宁、江苏、山东均为海洋经济损失绝对值最大的四个省份。To assess the impact of storm surges combined with sea level rise on; China's marine economy, this study utilizes the ArcGIS flood model, the; results of the spatial visualized GDP mapped through luminous space; remote sensing, and the forecast of the growth of China's marine economy; by 2050. We assessed three scenarios of the impact of sea level rise; combined with the effect of storm surge on the marine economies of; China's coastal provinces. The simulation results show:the scenario that; sea level rise combined with storm surges and the CHmax-0.3 m; astronomical tide causes the biggest loss in 2050,which is 3.544459; trillion yuan, accounting for 9.39% of the total output of the marine; economy of China; under the CHmax-0.3 m scenario, in 2050,Liaoning; Province has the largest proportion of losses, followed by; Guangdong,Guangxi and Fujian; under the three scenarios of 0.3 m sea; level rise,Guangdong,Liaoning, Jiangsu,Shandong are the four biggest; provinces in terms of marine economic output losses

基于潮汐表数据同化的天文潮数值预报模型及其模拟预报效果

[摘要]：潮汐表是利用长期潮汐观测结果经调和分析实现的主要港湾潮汐预报结果, 具有较高的预报 精度, 而通常的天文潮数值预报目前还难以达到潮汐表的预报精度. 本研究在建立常规天文潮数值 预报模型的基础上, 建立了基于潮汐表数据同化的天文潮数值预报模型, 并分别采用这2种模型预 报福建沿岸海域的天文潮. 其结果表明同化模型的预报结果无论是在潮时还是在潮高均明显优于 常规模型; 同化模型能显著地改善所研究的沿岸海域90个水位点中至少45个水位点的潮汐预报 结果, 而其他水位点的预报结果也有不同程度地改善.国家863 计划重大资助项目( 2006AA09A302-6

SST Seasonal Variation Characteristics in Luzon Strait and Its Around Seas

利用海表温度的遥感资料,分析了吕宋海峡及其周边海域海表温度的季节变化及其区域特征,并初步分析了其主要特征的形成原因.研究结果表明:冬季海表温度除受太阳辐射、东北季风的影响外,还受该区域海流、海陆分布的影响,因此温度场呈现出多个水舌结构;夏季海表温度空间分布较均匀,冬季的水舌结构基本消失;同时在台湾海峡西岸以及吕宋岛东、西两侧海域分别出现上升流导致的低温区和大于30.0℃的高温区,后者主要受海面辐射、海流等的影响.绝大部分研究海域内的海表温度极大值出现在7月,但在吕宋岛以西海区、台湾海峡中北部海区海表温度极大值分别出现在5月和8月;相对而言,海表温度的极小值主要出现在1月,研究区域东北部124°~126°E海域推迟到2月.In this paper,we use remote sensing data to study the seasonal variations of SST in Luzon Strait and its around area,and preliminarily analyze the cause for some of the main characteristics.The research results indicate that in winter,besides solar radiation and the northeasterly monsoon,the factors that influence SST in the west and east of Luzon Strait is the sea surface currents and the distribution of sea and land,thus the SST field of the whole area displays several tongue-shaped structures;and in summer,SST is evenly-distributed,and the wintertime tongue-shaped structures disappear;the SST in the central Taiwan Strait is also affected by the South China Sea Warm Current;and there is a cold zone along the coast in the western Taiwan Strait due to the coastal upwelling;at the same time,there are two higher SST zones in the east and west of Luzon Island.Those SST variation characteristics are mainly influenced by solar radiation and currents.In most study area,the maximum SST occurs in July,some in May and August and part in June.Relatively speaking,in the most of the study area,the minimum SST appears in January,with only a small area in the northeastern study area in which it is put off to February.国家重点基础研究发展计划(973)(2007CB411803;2009CB421208);国家自然科学基金项目(40821063

Numerical simulation of imbibition oil recovery for low permeability fractured reservoir

针对渗吸法采油中的毛管力驱动项和流动系数的取值问题，根据地下流体渗流特征，建立了低渗透油藏渗吸法采油数学模型，给出了数值解法．定量分析了渗吸法采油的主要影响因素，通过实例验证，用该方法计算的各项动态指标与矿场实际值符合程度较高．结果表明：基质与裂缝渗透率之比小于O．Ol，油水黏度比小于15，毛管力较大的水湿油层比较适合于渗吸法采油，能够提高水驱采收率2％左右

Numerical Experiments of Storm Surges Along Fujian Coast

福建沿岸风暴潮灾害严重,为研发具有快速预警能力的福建沿岸风暴潮漫堤预警辅助决策系统,建立了福建沿岸台风暴潮数值模型,并对31个历史台风引起的福建沿岸风暴潮进行了后报模拟,结果与实际较为吻合.进而分别就台风前期近中心最大风速、前期中心移动速度和前期中心移动方向对后期增水的影响进行了数值实验.结果表明:在预报的台风参数的可能变化幅度范围内,前期台风参数对后期增水的影响较小.实验获得的最大绝对差值均远小于一般的风暴潮后报误差.Storm surges induce heavily disaster along the Fujian coast.In order to develop a fast storm surge warning system for Fujian,a one-way nested coupled storm surge numerical model was established and used to simulate the storm surges induced by 31 typhoon landfalls along the Fujian coast.The results were satisfactory and numerical experiments were then performed to study the variability of storm surges induced by the cyclone parameters and which were different from those 6/12 hours before landing.Parameters such as the maximum wind speed,typhoon track,and typhoon velocity were considered in these experiments.The experiments demonstrate that these typhoon parameters,which varied in their possible ranges when they were forecasted,induced little effect on storm surges when typhoons land.And the maximum Absolute discrepant is far smaller than the error of general storm surge prediction.国家863计划重大项目(2006AA09A302-6)资

Application of Ensemble Kalman Filter Data Assimilation Method in Tide Simulation and Prediction in the Taiwan Strait

为了提高潮汐数值模拟和预报的准确度,利用《2009潮汐表》,建立了含集合kAlMAn滤波同化模块的潮汐数值预报模型,对集合kAlMAn滤波同化模块中的参数进行确定,并对同化效果进行了检验.为了确定集合kAlMAn滤波同化模块中的参数(主要是集合数和截断半径),考虑了42种参数组合,在这些组合中,以模拟准确度和计算相同时段的潮汐值所需时间为标准,存在最优的参数组合:其中,东山、厦门、娘宫、崇武4个站最优的截断半径为35 kM,三沙站最优截断半径为30 kM,5个站的最优集合数均为20.实验结果表明:将集合kAlMAn滤波同化方法用于潮汐数值预报模拟中是可行的,同化验潮站的潮汐表上的潮位数据对验潮站本身及其邻近网格点的潮汐模拟改进最大;当5个站不同化调和数据进去的时候,东山、厦门、娘宫、崇武4个站的模拟准确度,在未来12 H仍然有所提高.In order to improve the accuracy of numerical simulation,a numerical model of tide with an Ensemble Kalman Filter(EnKF) data assimilation technique is established.In this article we take into account 5 stations,which are Dongshan,Xiamen,Nianggong, Chongwu,Sansha.The data assimilated in the model is from the book of 2009 Tide Table.In order to decide EnKF the best combination of two parameters,which are the cut radius and ensemble number,we consider 42 kinds of parameter combinations at each station.Based on the accuracy of numerical simulation and the time spent in calculating the same period of tide,we can define the best parameter combination at each station.Numerical experiments show that the best value of cut radius is 35 km for Dongshan,Xiamen, Nianggong and Chongwu stations,and the best value of cut radius is 30 km for Sansha station.The unique best value of ensemble number for 5 stations is 20.It can be seen from numerical experiments that data assimilation with EnKF method can improve the accuracy of tide simulations and tide predictions in the following 12 hours in the Taiwan Strait.国家863计划重大项目(2006A09A302-6)课题;福建省自然科学基金(2009

酸催化山梨醇脱水制异山梨醇的研究进展

异山梨醇是一种生物基功能性二元醇,近年来因其在聚合物工业中的潜在应用价值而备受关注。山梨醇脱水反应是生物质转化合成异山梨醇的关键步骤,目前普遍采用酸催化体系,且在酸性催化剂开发及工艺研究方面均取得了良好进展。本工作主要介绍了已报道的酸性催化剂结构与性质对催化活性及选择性的影响,指出强酸性均相催化剂具有高催化活性,但腐蚀性强,且不易循环利用;多相催化剂催化活性与酸性位点、酸度、酸容量、孔结构、表面性质和结构等都有关系,且这些性质随催化剂组成和结构改变而相互影响。针对目前山梨醇脱水反应催化剂均相催化腐蚀性强、催化剂循环性差,多相催化剂催化活性不高的现状,高催化活性可循环使用的离子液体催化剂是一种具有发展潜力的均相催化剂,对多相催化剂构效关系还应进行更多的研究以指导新型催化剂的开发

酸催化山梨醇脱水制异山梨醇的研究进展

异山梨醇是一种生物基功能性二元醇,近年来因其在聚合物工业中的潜在应用价值而备受关注。山梨醇脱水反应是生物质转化合成异山梨醇的关键步骤,目前普遍采用酸催化体系,且在酸性催化剂开发及工艺研究方面均取得了良好进展。本工作主要介绍了已报道的酸性催化剂结构与性质对催化活性及选择性的影响,指出强酸性均相催化剂具有高催化活性,但腐蚀性强,且不易循环利用;多相催化剂催化活性与酸性位点、酸度、酸容量、孔结构、表面性质和结构等都有关系,且这些性质随催化剂组成和结构改变而相互影响。针对目前山梨醇脱水反应催化剂均相催化腐蚀性强、催化剂循环性差,多相催化剂催化活性不高的现状,高催化活性可循环使用的离子液体催化剂是一种具有发展潜力的均相催化剂,对多相催化剂构效关系还应进行更多的研究以指导新型催化剂的开发